So i took my iphone in last night for a swap due to dust under the screen, i rang ahead prior to booking my appointment to check that they had a 16gb white in stock for replacement, which they did, so i booked my appointment and drove the 26 miles to the store to meet my 'Genius'. He looked at it, wiped the screen and asked me if i kept the phone in a cover, strange i thought and i admitted that when it was new i did but 2 months after i stopped because i loved the 'naked look' he opened my sim tray and exclaimed that there was a lot of fluff/lint in and around the tray, same with my headphone jack and my dock connector, he informed me that this was the reason there was dust behind the screen. He explained that there shouldnt be dust under the screen if it was kept in a case all the time, and my reply was to ask if apple now provide a case when the iPhone is purchased seeing as it NEEDS to be in one, he told me no, so i told him not to be silly and just replce the phone as it's a manufacturing issue not dust getting in from behind the sim tray, he only agreed that he would this time IF i agree to put it back in my case, i obviously haven't but a nice shiny iphone is now mine! I've usually had great service at the genius bar, and could not understand the guy's lack of willing to cooperate, it's not as if he's gonna get docked pay for every iphone handed in! come on get your geniuses sorted!